Choosing a modified ISO instead of an official one can lead to several critical issues:
Pirated versions often block official Microsoft updates to avoid detection, leaving your PC exposed to the latest security threats.
Unauthorized activators can cause frequent crashes, blue screens, and unexpected reboots.
You don't need a "pre-activated" file to use Windows 10 for free. Microsoft allows you to download and use the official OS without immediate activation. Download Windows 10 ISO: Get It Free & Legally - Ftp